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发明名称
HAUSHALTSTREPPE.
摘要
申请公布号
DE1720349(U)
申请公布日期
1956.04.12
申请号
DE195500R1698U
申请日期
1955.11.02
申请人
GERHARD RATZMANN
发明人
GERHARD RATZMANN
分类号
主分类号
代理机构
代理人
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